Film-reel for moving-picture machines.



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T. SHARLOW.

FILM REEL FOR MOVING PICTURE MACHINES.

APPLRGATION FILED Arm 6, 1910 *7 3i Paaienteul Sept. 27, 1910.

2 24b, Mi if Mia/@55 0 UNITED PATENT OFFICE.

THOMAS .SHARLOW, O1? NEW YORK, N.' Y..

FILM-REEL Foe MOVING-PICTURE MACHINES.

Toiall whom may concern:

- Be it known that '1, Thomas SHARLow, a

citizen of the United States, residing in the borough of Manhatta'incity, county, and

The invention consists in the specific con-- structionand arrangement ofparts hereinafter descr1bed and-claimed, dlstingulshlng features beingthe manner in which the 1101-".

low film drum and concentric spindle sleeve are attached to the sidedisks, the formation of the latter with protruding hubs or beara ingsurfaces within the line of circumference of the film .drum for thepurpose of preventing frictional contact with the peripheral portions ofthe disks beyond the drum; the formation of the hollow film drum with alongitudinal slot for the reception andretention of the end of the film,and the provision of a spindle sleeve extending axially within thehollow film drum from one side disk to the other and formed with aspline groove extending its whole. lengtlnfor the reception and guidanceof the key upon the usual reel actuating s indle, all substantially ashereinafter set orth.

In the accompanying drawings, Figure 1,

. is a side elevation of my improved film reel;

Fig. 2, is a fragmentary section upon an enlarged scale, taken'uponplane of line 2, 2,

plane of line 4:, 4, Fig. 1, upon an enlarged Fig. 1; Fig. '3, is atransverse fragmentary section taken upon the plane of line 3, 3, Fig.2. Fig. 4, is a fragmentary section upon scale, showing one of the sidedisks.

The film drum D, consists-of a strip of metal bent into cylindricalshape, the ends 0?, 03-, of the strip being brought near, but not quitetogether, so as to form a longitudinal slot 03 between them. Tonguescl dprotrude from the side of the strip and" enter slits a, a, formed fortheir reception in the side disks A. and A, which latter arecounterparts of each other exceptthati'theyare reversed in position withrelation each other. Three or more of these ton ues dQd,

may provided as may be foun e gi Specification of Letters Patent.

Patented Sept; e7, 1910.

Application filed April 6, 1910. Serial No. 553,834.

pedient, the ends, after passing throu h the slits a, a, being 'bentflover upon tie external faces of the disks to bind the latter to theannular edges of the film drum stri The central portions of the disksA,'A, with in the line of circumference of the film drum D, bulge orprotrude outward beyond the protruding tongues d ri to form hubbearingsa a", which protect the said tongues d J and the concentric peripheralportions of the disks from frictional contact withparts extraneous tothe reel, as will be understood by reference to Fig. 2, in which thedotted lines an, ab, represent extensions of the planes of theexternalbearing surfaces a a, of the hub sect-ions of the reel. If desired theside members may be bent outward slightly beyond the film drum D, toform an external groove as shown in Fig. 2, to more" elfectually isolateand protect the tongues (Z (Z as well as to stiffen the disks at linesof contact with the film drum strip. The bends should be within theplanes w, w, of the hub sections a a, as clearly indicated in said Fi 2,so that the tongues d d, are practica ly countersunk within theprotruding central hub bearing surfaces.

Another special feature of my construction consists informing the hubsection with a spindlesleeve S, extending all the way through, from onehub bearing urface o to the other a, and in forming th' spindle sleeveS, with a longitudinal spline groove 8, for the reception and guidanceof the key or projection on the usual reel actuating spindle of themachine. This distributes and equalizes the strain imposed by thespindle and facilitates the placing of the reel upon the spindle ascomparedwith reels in which the side disks are formed; unly with centralopenings for the actuating spindle. In use the end edge f, of a film isinserted in the slot d ,created by and between the spaced ends 0?, d, ofthe strip of which the drum is composed-as indicated in Fig.- 3, thisconnection being sufficient to maintain the relation of the parts untilthe completion of .the first rotation of the reel, when the second andsubsequent convolutions ,of the film around the drum D, will insure andmaintain the connection until the film is subse- ,,quentlyunwound.- Inthis connection it is obvious that the film slot (Z may be otherwiseformed in the periphery of the film drum. D, with like result in so faras its" function is conoerned, but by forming it spacing the ends d, d,of the drum sheet as hjreinbefore described, I simplify and gcheapen themanufacture of the reel. In a fact, the Whole device is simple andcompact,

upon or removing. it from the actuating spindle.

The 'whole reel being made of metal is' absolutelyfire proof,forvobvious reasons a great advantage inmoving picture machines.

To facilitate the insertion and removal of. the .film, and themanipulation thereof, the

side disks'are formed with handopenings h,

*.which coincide in position as related to each P h I What I claim as myinvention and desire to secure by Letters Patent is,

A film reel for moving picture machines comprising a film drum and sidedisks, said drum consisting of a sheet of metalbent into cylindricalshape and formed with end tongues engaging with slits formed for theirreception in the sidedisks, the edgesof said drum sheet being spacedapart to form a longitudinal slot, said side disks each formed with aprotruding central hub bearing having an annular groovein which thetongues on the drum are countersunk, and a spindlesleeve extendingaxially between and secured to the said protruding hub bearings of theside disks, and formed with a continuous longitudinal spline groove,substantially. in 40 the manner and for the purpose described.

' THOMAS' SHARLQW. Witnesses: D. W. GARDNER,

Gno. WM; Mm'r'r.

